What was found
APU LUBE FILTER DELTA-P EXTENDED. GROUNDED - YES. REPLACED THE APU LUBE FILTER AND RESET DELTA-P PER B737-900 AMM 49-91-12. NO DEBRIS NOTED. LEAK AND OPS CK GOOD.
- Difficulty date
- March 7, 2022
- Submitted
- March 9, 2022
- Operation
- Air carrier
- Aircraft
- N433AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41704
- Aircraft time
- 31,235 hours, 9,905 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Filter Element
- Part number
- 7590361101
- Condition
- Clogged
- Location
- Apu
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.